32. When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexoseisomerase, the final mixture contains twice as much glucose 6-phosphate as fructose 6-phosphate. Which one ofthe following statements is most nearly correct, when applied to the reaction below? (R = 8.315 J/mol‧ K and T =298 K)?
(A) is -1.7 kJhmol.
(B)   is +1.7 kJ/mol.
(C)  is incalculably large and positive.
(D)   is incalculably large and negative.
(E)  is zero.